package org.qb.mapreduce.extractedTransformLoad;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;

import java.io.IOException;

public class WebLogDriver {
    public static void main(String[] args) throws IOException, InterruptedException, ClassNotFoundException {
        // 输入输出路径需要根据自己电脑上实际的输入输出路径设置
        args = new String[] { "D:/big data/hadoop3.X/资料/11_input/inputlog", "D:/big data/hadoop3.X/output/etlWebLogDemo" };
    // 1 获取job信息
        Configuration conf = new Configuration();
        Job job = Job.getInstance(conf);
    // 2 加载jar包
        job.setJarByClass(WebLogDriver.class);
    // 3 关联map
        job.setMapperClass(WebLogMapper.class);
    // 4 设置最终输出类型
        job.setOutputKeyClass(Text.class);
        job.setOutputValueClass(NullWritable.class);
    // 设置reducetask个数为0
        job.setNumReduceTasks(0);
    // 5 设置输入和输出路径
        FileInputFormat.setInputPaths(job, new Path(args[0]));
        FileOutputFormat.setOutputPath(job, new Path(args[1]));
    // 6 提交
        boolean b = job.waitForCompletion(true);
        System.exit(b ? 0 : 1);
    }
}
